They are literally doing exactly that. You can take your old speaker into a Sonos store or ship it (on Sonos dime) back to them. They then refurbish and resell, and you get a discount.
This story is at best lazy reporting with many facts left out or unresearched.
I already replied to your other comment but in the interest of correcting this misinformation, you can neither ship your bricked device to Sonos nor bring it into a Sonos store.
In Belgium, any electronics vendor has 'aanvaardingsplicht', the duty to accept your old device when selling you a new one. So sonos shops here have to accept them. In fact, you can bring in your old 20kg tube radio and claim your new sonos is replacing it.
https://twitter.com/sonossupport/status/1179459927624036357?...
https://twitter.com/sonossupport/status/1198204183335309313?...
https://twitter.com/sonossupport/status/1196142002406133761?...